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What is difference between cell potential …

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What is difference between cell potential and electromotive force???

Posted by Pankaj Singh 4 years, 6 months ago

CBSE > Class 12 > Chemistry

1 answers

Sia ? 4 years, 6 months ago

Electromotive force (emf)	Potential Difference (Pd)
E.m.f is the energy supplied to the unit charge by the cell.	Potential difference is the energy dissipated as the unit charge passes through the components.
E.m.f is the cause.	Potential difference is the effect.
The emf is also present even when no current is drawn through the battery.	Potential difference across the conductor is zero in the absence of current.
Its unit is volt.	Its unit is volt.
It remains constant.	It does not remain constant.
It is always greater than a potential difference.	It is always less than emf.
It transmits current both inside and outside of the cell.	Potential difference transfer current between two points in the cell.
Its symbol is E.	Its symbol is V.
Its formula is E = I (Rtr) Rtr = total external and internal resistance.	Its formula is V = E – Ir
It does not depend on circuit resistance.	It directly depends on the resistance between two points of measurement.
It causes in electric, magnetic, and gravitational fields.	It induces only in the electric field.

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